简写背景属性
background:颜色 图片路径 居中 不重复(no-repeat) 固定(fixed)(没有顺序和数量要求)
background写在background-color 下面 其会被覆盖
表格
<tr> --行 不是table的直接后代而是tbody的直接后代
<td> --列
<th>--表头标签
<body>
<table>
<tr>
<th>c1</th>
<td rowspan=2>a2</td> 纵向合并两个
<tr>
<td>d6</td>
table{
width:
margin:0 auto; (居中)
/*boder-spacing:0px;*/
/*border:1px solid black;*/
border-collapse:collapse; 只留td边框 边框合并
}
td{
border:1px solid black;
}
/*基数行变色*/
tr:nth-child(odd){
background-color:#bfa
}
/*鼠标移动*/:
tr:hover{
background-color:yellow
}
长表格:
<table>
<thread>
<tr>
<td>日期</td>
</tr>
</thread>
<tbody>
<tr>
<td>2018.04.01</td>
</tr>
</tbody>
<tfood>
<tr>
<td>余额:5000</td>
</tr>
</tfoot>
完善clearfix
表单
<body>
<from action="地址">
<fieldset> (分组)
<legend>用户的信息</legend>
<label for="um">用户名</label> (点击用户名三个字也可以选中文本框)
<input type="text" name="username" value=“文本框的默认值(会在文本框显示)” placeholder="请输入6-12的字母(提示)" >
<br/> 换行
密码<input type="password" name = "password">
</fieldset>
<br/>
性别<input type = "radio" name = "gender" value = "male">男
<input type = "radio" name = "gender" value = "female" checked = "checked"(默认值)>女
<br />
爱好<input type="checkbox" name = "hobby" value = “football”>足球
<input type = "checkbox" name = "hobby" value = “blq”>玻璃球
<input type = "checkbox" name = "hobby" value = "backetball">篮球
<br><br>
你喜欢的明星:
<select name = “star”>
<optgroup label = "男">
<option value="gaga " selected = "selected">王嘉尔 </option>
<option value=" zhangruyun">张若昀</option>
</optgroup>
<optgroup label = "女">
<option value=" zh">赵丽颖</option>
</optgroup>
</select>
<br><br>
自我介绍<textarea name = "info"></textarea>
<br><br>
<input type="sublime" value = "注册">
<input type="reset" value = "重置">
<input type = "button" value = "按钮">
<br><br>
<button type="sublime">提交</button>
<button type="sublime">提交</button
<button type="sublime">提交</button
</from>
###框架集
不能用<body> 用<frameset>
<frameset cols = "50%,50%"> (分两列 rows行)
<frame src="表格名" />
<frame src = "表格名" />
</frameset>
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